Constructional material



Patented Au 22, 1933' UNITED STATES PATENT ol-"rlca CONSTRUCTIONAL MATERIAL Albert C. Fischer, Chicago, 11].,

Philip Carey Manufacturing Company,

poration of Ohio No Drawing.

-. out losing its tackiness and may be transported to its place of installation and used in such tacky condition Without further treatment.

A further object of my invention resides in the application of this normally lastingly adhesive, 5 sticky to the touch, to sheets or strips of carrier material, hereinafter called vehicles, so that when rolled into package form or placed face to face in contact with a similar sheet for packing and storing and transportation, they may be unrolled or pulled apart readily without tearing or damaging, and can be installed in tacky conditionjin this instance the tacky coating permits the facile separation of the contacting vehicle surfaces, the line of cleavage passing through the mastic itself.

The vehicle thus provided with a lasting adhesive,

mastic coating is particularly adapted to act as 'a packing for various types of installation, not only because of the waterproofing quality of the mastic but also because of its pronounced and I lasting quality of adhesiveness and further because of its plasticity.

A fm'ther object of my invention resides in the formation of a constructional material which has a lastingly sticky, adhesive surface, accomplished by providing a vehicle with a dense waterproofing mastic coating of vegetable or bituminous nature, and in applying to said coatipg an adhesive repellant which in the course of time becomes adhesive and sticky to the touch.

In the present invention. the vehicle may consist of sheets, strips or slabs of tar paper, felt fabric, fibers or other preferred material.

In the present invention I propose to coat the v vehicle with a dense waterproofing mastic, which may be of bituminous or vegetable nature, and then apply to such coating an adhesive repellant, which in the course of time becomes adhesive,

examples of such substances are, plain castor oil and silicate of soda. These are adhesive repellants which when set develop adhesiveness.

Examples of a dense waterproofing coating of bituminous nature are, asphalts which have melting points between 150 F. and 225 F. .An ex-' ample of adense waterproofing mastic of vege- 5 table nature is any polymerized oil or oil that can assignor to The a Cor- Application August 15, 1927 Serial No. 213,185

, 6 Claims. (01. 91-68) be oxidized, such for instance as, linseed oil or China wood oil; these two latter, of course, have to undergo special treatment well known to those skilled in the art before they would take on the above properties.

In certain instances I may coat the vehicle directly with these adhesive repellants.

If two vehicles treated as described are placed face to face they may be stored or shipped without deterioration, and may when desired.

It will be understood that my invention contemplates constructional material, the adhesiveness of which serves to hold said material in place in distinction to other materials which involve the use of pitch, or other material, mopped on at the time of assembling the material. This is especially true in the application of the invention'to roofing sheets, for the purpose of holding the sheets of roofing material in place. understood that after two sheets of building material according to the present invention have been separated,the adhesive surface of one sheet will be placed in contact with the non-adhesive surface of another sheet. The adhesive or mastic 8 will cause a union with non-adhesive surfaces -to which it is applied, which union may be made very excellent-by means of rolling and which will-improve in the course of time.

It will also be understood. that if it should be found that the adhesive surface of a sheet should become dried out, a solvent such as, toluol, benzol, kerosene, or cotton oil, may be used to bring the sheet back into adhesive state.

I The subject matter of been withdrawn from my prior 1,550,310, issued August 18, 1925.

I claim: s

1. Constructional material comprising a foundation sheet, a dense waterproofing mastic applied to the foundation sheet, and a water soluble protective layer superposed on the mastic.

2. constructional material comprising a foundation sheet, a waterproofing layer applied to the foundation sheet, and silicate of soda superposed on layer. .1

3. constructional material comprising a foundation sheet, a waterproofing mastic of bituminous material applied to the foundation sheet, an a water soluble protective layer superposed on the bituminous material.

4. constructional material comprising a foundation sheet, a waterproofing mastic coating of asphaltic material applied to the foundation the waterproofing be readily separated 65 It will be 75 this application has patent, No.

a protective layer of sheet, and a water soluble protective layer ap- 6. Roofing sheet material comprising a foundation sheet, a waterproofing mastic applied to the foundation sheet, and a protective layer of silicate of soda superposed on the mastic.

ALBERT C. FISCHER. 

